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Cornerstone Sep 16 - 22 25 questions
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Monday 16 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 4x - 14 = 6

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 130 in the ratio 4:3:3

    Answer: 52, 39 and 39
  5. 5. Statistics

    Calculate the mean of: 42, 18, 17, 8, 12, 33, 12, 39. Give your answer to 2 decimal places

    Answer: 22.63

Tuesday 17 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 3⁄8

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 7x + 8 = 50

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio

    Divide 220 in the ratio 2:1:2

    Answer: 88, 44 and 88
  5. 5. Statistics

    Find the mean of: 12, 9, 18, 13

    Answer: 13

Wednesday 18 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x + 8 = 41

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Divide 152 in the ratio 1:4:3

    Answer: 19, 76 and 57
  5. 5. Statistics

    Find the mean of: 3, 9, 24

    Answer: 12

Thursday 19 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x - 18 = 73

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 150 in the ratio 3:4:3

    Answer: 45, 60 and 45
  5. 5. Statistics

    Calculate the mean of: 42, 44, 35, 41, 49, 29, 33

    Answer: 39

Friday 20 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 7⁄8

    Answer: 43⁄40
  2. 2. Algebra

    Solve: 6x - 13 = 11

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Divide 171 in the ratio 3:2:4

    Answer: 57, 38 and 76
  5. 5. Statistics

    Find the mean of: 14, 18, 15, 6, 7

    Answer: 12